The bottom of the fly appears to be tacked so that the opening is too small. I don't know whether this is intentional, by design, or whether the extra stitches should have been removed or are optional at the purchaser's preference. I have removed the extra stitches in mine. I have never encountered this extra stitching in other pairs of pants. If the pants are supposed to be "regular" fit, then the the fly opening should also be regular and not stitched together too short!